How do I change the color of my hydrangeas?

lauriewood(8 SC)January 1, 2013

With the exception of some hydrangeas, such as the white varieties - most hydrangea color naturally depends on the PH of your soil. The more acid your soil, the more blue. On the other hand, if your soil is alkaline, your blooms will be pink. To change, or speed this process along, add a solution 1/4oz. of aluminum sulphate and 1/4oz. sulphate of iron mixed into one gallon of water for blues. Apply up to two gallons in spring and fall. A stronger solution can have a negative effect, so do not exceed recommended dosages. More is not, in this case, better. To encourage pink, add lime. The pink will not appear right away but over time.